Removal of cadmium (Cd II) from polluted seawater

Cadmium is one of the heavy metals, highly toxic and non–degradable and, therefore, persistent. Discharges containing cadmium are controlled due to its high toxicity level and its tendency to accumulate in living organisms. The present article describes the use of coconut pith as adsorbents for removing cadmium from seawater. The method consists in preparing activated carbon from coir pith, which is a raw material very easy to find in the Caribbean. The results indicate that the capacity of the adsorption can be up to 88.2 mg/g adsorbent, the method is cheap and the efficiency is similar to other chemical methods reported in the literature.

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Decoloration of waste water with SERA CON C-BOR / C-RAP – an easy process
Official Comments
strongest reduction agent resulting in a rapid and completedecoloration of dyestuffs that are sensitive to reducing agents.
decoloration is based on a decomposition mechanism, i.e. after decoloration the dyestuffs are present in respective colorless fractions
residual liquors can be decolorized in relatively short time by more than 95% without any heating
cancerogenic amines are not developed more than 95%...

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